Thomas e



e :di i with 151,25" tmf t' IMPROVEMENT ni 4s'rnnt-GENERATOR Hamas.

THOMAS E. BELTON, OF BUFFALO,r NEW YORK.

Letters Patent No.` 60,124, dated December 4, 41866. n

, SPECIFICATION. T0 ALL WHOM IT MAY GONCERN:

Beit known that I, THOMAS E. BELTON, of the city of Bu'alo, in thecounty of Erie, and State of blew York, have invented a new and improvedHeater for Steam Boilers; and I do hereby declare that the following isa full and exact description thereof, reference being had to theaccompanying drawings, making part of this speciiication, in which-Figure 1 is a cross-section of the heater in the planeof line a: z, iig.2. Figure 2 is a central longitudinal section of the same, in the planeof line y y, iig. 1. Like letters of reference designate correspondingparts in both igures.

My improvements are designed more ,especially for use with marineboilers and those employed in navigating rivers where the deposit of mudand other Vsediment .is considerable, which requires frequent blowing oin order to prevent 'undue accumulation of the same; and th'e inventionconsistsl in the construction and arrange ment of the heater relative tothe boiler andV furnace; in a device for facilitating the discharge ofthe sedimentary deposit; and also an arrangement for preventing theexcessive heating and injury to the portions exposed to the iire`when'the'vessel is careened, all as hereinafter fully set forth.

As represented in the drawings, A is the furnace, B the re grate, C thefrontend of thel boiler, D the l crown sheet, and E the steam dome. Frepresents the heater, which is preferably of cylindrical form, andsituated, preferably, just back of the bridge of the furnace,transversely of the same, as shown, so that the heat i may circulatefreely around ti and through the horizontal transverse fines, gg, withwhich it is provided. At each` end of the bottom of the heater, andextending about one-third of its length, is a hollow bridge or sedimentpas-` sage, H, closed at the extreme ends, with its two sides inclinedtoward eachother, forming an angle at the top like` i i roof, asrepresented in iig. l. These sides, at their lower edge and junction`with the bottom of the heater, are` 1 provided with small openings,iz', for the iiow of the mud or other deposit into the passage, H, whereit is dis-` charged through the throat or pipe, J', in the bottom, whichis provided with 4suitable stop-cock, k. The aggregate size of theopenings, z' t', should be a little less than that of the exit pipe J',in order to produce a greater suction and more rapid current throughthem during the blowing oi, and thereby facilitate the discharge of the`t sediment. The' water for the boiler is supplied to the heater by meansof a force pump,throughthe main` feed-pipe, I, provided with acheckfvalve, Z, which opens up through the centre of the bottom of theheater,` Across the bottom of the heater, between the bridges, H, isfastened a horizontal distributing-plate, waag-ainsi:` the underside ofwhich the injected stream of water diffuses itself, whence it graduallycommingles `ateach l end of the plate with the heated water in thevessel. At the top of the heater, at eachend, portions 4are cut` away soas to form (preferably) long oval` apertures, n n, which form the baseand open upward intogconical passages, O, the apiees of which areconnected with the crown sheet, D, by means ofV the shortrpipes, pp,'tha .t

open into the boiler above. The object of these enlargedconical passagesis 'to protect the -heater from injury under the followingcircumstances: while in a sea-way, or at dock receiving and -dischargingcargo, the vessel v is consequently careened, in consequence of whichthe heater is longitudinally inclined, so that one end `is el`e`H pvated above the other and above the water line. The result of this isthat the raised end becomes excessively p heated from containing onlysteam and being exposed to the great heat of the furnace. When thevesselrights l itself there is a sudden rush of the water to this end, thelower temperature of which would (frequently hause` the top of theheater to crack from sudden cooling, were it constructed closed at ,thispoint with only a passage` at the centre. By construetin g the top ofthe heater with the enlarged conical passages leading `to the eductionpipes, p 1o, steam cannot accumulate in the angle of the elevated end ofthe heater when inclined, andconsev quently the liability to overheatingis obvated; and the form thus given to the parts connected `with the`pipesf p p, admits of greater freedom of expansion and contraction,from the intensity and extremes oftemperatnnreto which the heater issubjected, without straining the joints.v When the vessel is notgoingitisfrequently` desir-1 t able to keep up suilicient heat toprevent the steam in the boiler from going down.4 `At`such times `asthe` l p machinery is not working and the heater is not supplied by thepump through the supply-pipe, 1,1 provide an` additional pipe, q, forcommunicating with the water in the leg, c', of the boiler, 'throughwhich ithe heater may Vreceive its supply to compensate for whathasevaporated, the water from the `leg iiowing in as `the temperature` i ofthat in the heater is raised above that of the boiler, thus creating acontinuous circulation.

With marine boilers, where the use of salt water makes it necessary toblow off. frequently, the employment i l of a heater is a matter ofgreat importance, to keep the feed-water of the boiler ata boilingtemperature` ini i order to maintain the temperatureand keep the steamfrom going down, which would otherwise result-from the blowing o werethe feed-water introduced cold.

With river boilers the heater, and the device at the bottom of the samefor blowing o the mud and other sediment which so abounds, areattachments of equal if not greater importance, for the sediment isdischarged with greater facility from the heater, which prevents itspassage into the' boiler, where jit would have to be blown o' withgreater diiculty and a more detrimental effect. The turbid water as itenters the heaterstrikes the uhder side of the plate, m, which arrestsand deliects it each way toward the bottom, where the greater portion ofthe sediment settles and is blown off through the shields and pipes, HJ.

The pump of the main feed-pipe, I, which supplies the heater, may beoperated by `a donkey engine, so that the water 'shall at all timesenter the boiler hot. The transverse ues, g g, being in a direct line ofthe draught,

through which the re passes, are subject to' an intense heat, the largesurfaceof which, thus exposed, rapidly heats the Water in contacttherewith. v

What I claim as my invention, and desire to secure by Letters Patent, isY The heater F, provided with ues g g, and conical discharge-ports O O,arranged in combination with a boiler and furnace so as to operatesubstantially as set forth.

I also Iclaim the mud-shields H H, provided with perforations iz', incombination with the pipes J, for discharging the mnd and othersediment, substantially in the manner specied.

I also claimY the dellecting and distributing-plate m, arranged andoperated as described.

I also claim, in combination with the heater F, constructed asdescribed, and leg c of the boiler, when the same extends below thelevel of said heater, the pipe q, arrangedand operating substantially inthe manner and for the purpose herein set forth.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

p THOS. E. BELTON. Witnesses JAY HYATT, JAMES C. BROWN.

